package com.hmdp.service.impl;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.utils.RedisConstants;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {

    @Autowired
    private StringRedisTemplate redisTemplate;

    @Override
    public Result queryTypeList() {
        String cacheTypeJson = redisTemplate.opsForValue().get(RedisConstants.CACHE_SHOP_TYPE_KEY);
        if (!StrUtil.isBlank(cacheTypeJson)) {
            List<ShopType> typeList = JSONObject.parseArray(cacheTypeJson, ShopType.class);
            return Result.ok(typeList);
        }
        LambdaQueryWrapper<ShopType> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.orderByAsc(ShopType::getSort);
        List<ShopType> typeList = list(queryWrapper);
        String typeJson = JSONUtil.toJsonStr(typeList);
        redisTemplate.opsForValue().set(RedisConstants.CACHE_SHOP_TYPE_KEY, typeJson, RedisConstants.CACHE_SHOP_TYPE_TTL + RedisConstants.randomTTL(), TimeUnit.MINUTES);
        return Result.ok(typeList);
    }
}
